Imagine we need (for some reason) a helper that shuffles the characters of a string and we want it to be available in our views.

There is NO coupling between the file name and the name of the module. We can define this code where and how we want.

# apps/web/application.rb
module Web
  class Application < Hanami::Application
    configure do
        'helpers',
        'controllers',
        'views'
      ]
      # ...
      view.prepare do
        include Hanami::Helpers
        include Web::Helpers::Shuffler
      end
    end
  end

Please note that our custom helper will work even if we remove the include Hanami::Helpers line, because it’s just Ruby.